Math Is Fun Forum

I am afraid, this is a natural fact (by design). Therefore, nothing and no one can change it.

As far as I know, this tactic has been also followed in all other countries since many decades ago. I noticed it too in my country.

Although my private business is almost paralyzed since after year 2011 due to world's events and regulations, I keep designing new products (that needs lots of math) just to keep my brain cells alive.

You are fortunate for having a very small circle of friends. My circle has zero radius
There is no one around me lately who enjoys math and education. It seems almost all people are attracted by other things.
About trust, two humans cannot decide to trust each other really before they discover each other while facing real hard times together.

Any government has to be run by rich persons or serving rich ones. Naturally, they have to protect each other, besides being protected by their masters (working behind the scenes). This was simplified 2000 years ago when it was said that a rich man is not supposed to enter ...

Your remark is good.

And you are right. In the expression (2 m/s), the forward slash symbol, in itself, doesn't represent a division as in the formula v=x/t.
In 2 m/s, it simply tells us that the result 2 came from a division (as mentioned by Jai).
Similarly, 2 m/s² just tells us that 2 is the result of two divisions.

I guess you know that x^m/x^n = x^(m-n)
Therefore, x^a/x^a = 1 = x^0, x could be any number.

Now we can write:
1/s = s^0/s^1 = s^(0-1) = s^-1 ===> s-¹
Similarly,
1/s^2 = s^0/s^2 = s^(0-2) = s^-2 ===> s-²

I asked this because getting 7 instead of 9 now doesn't imply that you are not (and will not be) very good in math in real life.

I recall, during my MS studies, I got the lowest grades (around 70/100) in two courses related directly to electronics. My grades in the remaining 6 courses were not less than 95/100. The irony is that I became, in real life, professional in electronics (as a private designer since then till now) while I forgot almost all what I learnt in those 6 courses!

On the other hand, if someone searches my BS grades, he finds that I was the only student who failed to pass the exam of the final year related to transformers design. This happened to me due to a mistyping made by the one in charge to copy the grades onto the final list! Although my true grade was the highest one, I didn't complain. I simply repeated the exam.

Anyway, from what you wrote so far (questions, remarks and comments), I see in you a future specialist/professional in one of the scientific fields, if not more.

On cloudy days, he looks at the watch (waterproof for raining days too) which is placed on it

They surely have their good reasons to play ignorance, openly in the least, though they are surely not less intelligent than we are
I am afraid that one has to be rich (I mean rich really) or is serving a powerful rich group to be acknowledged as a first step.

For instance, I didn't hear yet of a well-known inventor, in the human history, who wasn't of a rich family or wasn't serving a rich group (a company).
I mean, this is life since always, we like it or not.
Simply speaking, what is happening to you is natural. It also happens to any other ordinary person around the world (as I, for example). This is why every time I try to find/discover something new, I see if it can be useful to me in the first place, because the world has no time to listen to me

Anyway, I hope that such negative reactions don't prevent you to keep thinking of new ideas.

For instance, When I read this exercise many decades ago, the question was:

Prove that the two equations have one solution if the following two conditions are satisfied:

B*D = E*A
and
A*E^2 - D*B^2 = 4*A*D*(F-C)

As you know, this is simply a special case.
Your answer is right always. I mean, your condition is satisfied in this case too.

Your answer is right, but this is half the journey only.

I am 75 and math is my favorite since I was teen.
Although I still enjoy working with numbers and equations in designing various products in electronics, I can no more be interested in fields not related to my work.
In these hard days, I am a poor boss who tries his best to gain his daily bread and of his few assistants despite the lack of electricity and fuel.

When I was younger and living in the past golden years, having the chance to study and apply, in some ways, your interesting work would have been a great gift to me.

Interesting exercise.

Kerim

For instance, let us recall that the solution of a problem could be the null set, that is it doesn't have one.

When I was at school (then universities) and I couldn't find a solution of a problem, I went on proving that no one else can find it too by proving it cannot exist in the first place (as you did).